Two relay selection schemes (i.e., random selection and superior-link selection) in multiple relays-assisted internet of things (IoT) systems was proposed in [1]}, where the source needs to transmit two types of messages with/without covert requirement. The numerical results showed that the superior-link selection scheme has significant improvement in term of covert capacity when compared to the random selection under the same transmission power at the source. The routing of information in covert wireless networks with multiple relay nodes and multiple wardens under additive white gaussian noise (AWGN)channels has been considered in [2]}, where the algorithms were developed to find the path with the maximum throughput and the path with minimum end-to-end delay when considering a single key and the case of independent keys at the intermediate nodes.
